Jane is walking along a beach and finds seaweed washed up on the beach. It resembles a plant with a long stem-like structure with what appears to be leaves attached to it. . She observes a ball-like structure attached to the stem. What is this structure and what has Jane presumably found? The ball-like structure Jane observes is a , and she presumably has found a species of .

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.